A.檢查錨卸扣的磨損和變形情況 B.檢查錨卸扣的橫銷是否松動 D.檢查錨桿、錨抓的變形情況 D.檢查錨抓轉(zhuǎn)動是否靈活
A.2/2 B.2/3 C.1.5/2 D.1.5/3
A.-4%~+4% B.-4%~+8% C.-5%~+5% D.-10%~+10%